Pre-diabetes: opportunity or overdiagnosis?

I read with frustration the findings that “Let’s Prevent” and the DPP fail to show any statistically significant reduction in progression to Type 2 diabetes compared with normal care. Yet on looking into the lifestyle intervention offered for the DPP I am not surprised. Again the advice given is to follow PHE dietary advice - maintain a low fat diet, yet surely we all know the problem in diabetes and pre-diabetes is a problem with carbohydrate metabolism. Is it not about time we start to see a widespread roll out of low carbohydrate, higher fat diets? Just one example, my mother, her HbA1C fell from 48 to 38 following a moderately low carbohydrate diet for 3 months. Fat is not the problem in diabetes, carbohydrate is. See Diabetes UK discussion forums of patients discovering this for themselves - often with no help or contrary advice from their medical team. Diabetes and pre-diabetes is a frequently reversible condition of abnormal carbohydrate metabolism. Carbohydrate drives insulin secretion. If we advise patients to reduce carbohydrate (not fat) in their diet the problem often resolves.